10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHOutside air temperature reading low, minus figures
Leading reported evidence
Replace bottom horn
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
we didn't remove the PU to replace the bottom horn !
Outside air temperature reading low, minus figures
Read full discussion summary
Leading evidence: 'Replace bottom horn' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace bottom horn' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Outside air temperature reading low, minus figures
Use default value of - 48
Suggestion or failed attempt
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
Porsche tend to use a default value of - 48 for an open circuit or dead temp sensor ..
Outside air temperature reading low, minus figures
Coverage and how to read this overview
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
10 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
1 acknowledgements have no verified action link; they do not establish a repair result.
Outcome without a verified action link
I bought a used one from ebay to replace it but when fitting it it didn't work, I realised the wiring had snagged when the indicator got stuck between the tyre and the arch so had to do a solder joint.
I was just wondering if anyone knows if the sensor is going faulty when it reads low, intermittently, I had a reading of -22 degrees and again a couple of days later at -13 degrees, it will be back to normal next time I look?
Sorry dont know for sure, but there is a chance that it may be going open circuit or shorting intermittently where the sensor connects to the cable...
:?:
This is also something I thought it may be.
On my drive down to Le Mans Classic I lost my offside side marker indicator, I saw it in my door mirror smash to pieces. I bought a used one from ebay to replace it but when fitting it it didn't work, I realised the wiring had snagged when the indicator got stuck between the tyre and the arch so had to do a solder joint. I'm wondering if that caused my issue with the wiring for the temp sender too, it was only an issue after the indicator fell out.
Porsche tend to use a default value of - 48 for an open circuit or dead temp sensor .. i'm not sure the exact value for this one but i would unplug it , ignition on and see what the reading was to confirm open circuit .
That will give you the dead sensor reading .
To be honest though .. I would just replace the sensor .. might find one on ebay .. if that didn't fix it it would more than likely be the instrument cluster and as such .. not worth fixing .
Yours has an intermittent fault ..... it's probably different temps ( altered resistance as it reacts to the temp ) and it's giving different readings .. some of which are correct .. hence replace it .
Thanks deMort, it means bumper off to just unplug it because I have grilles, I do have a low tone horn not working and have one waiting to go in and suspected coolant leak somewhere on the nearside front corner so I'll have to remove it anyway.
I'll report back.
On a ramp we can undo the lower PU fixings and remove the lower horn unit .. i can't recall if you can unplug this sensor the same way but it's worth a try .
Lets just say at OPC and on bonus .. we didn't remove the PU to replace the bottom horn !
It hurts though .
I removed the bumper yesterday and replaced the horn, I also unplugged the temp sender and the dash showed no numbers just dashes, ie --:-- I also found my coolant leak, N/S rad has a pin hole in the top core. I have ordered a new rad but I haven't decided that the temp sender is faulty or not, it hasn't made a false reading all weekend. I mixed some body filler up and plugged the rad for the time being while I wait for the new rad to be delivered.
Ok so that proves there is a connection between the sensor and the instrument panel as the reading has changed , you have different readings but not dashes , hence its not going open circuit .. .. whilst its possible there is a corroded wire between the two the most obvious item is either the sensor itself or the instrument cluster ..
I've seen both but logically you would replace the sensor .. if that didn't fix it then not continue as a cluster is not worth replacing for this .. £2500 from memory for a new one .
